Upstream imports (April 2026)

This note records which FWGS/xash3d-fwgs and Velaron/cs16-client changes were evaluated for CSRetro and what was merged.

Inventory (relevance to CSRetro)

Upstream (approx.)	CSRetro relevance	Action
`fd55716` ref/gl: respect TriAPI-disabled culling	Yes — `engine/ref/gl/gl_studio.c`	Merged
`feeb409` client saytext: empty nicknames, strip indices	Yes — `client/cl_dll/saytext.cpp`	Merged (no `CUtlString`; uses `Localize_StripIndices`)
`0b920be` engine: delay free when channel inaudible	Yes — `engine/engine/client/s_mix.c`, `sound.h`, `s_main.c`	Merged; free when `host.realtime >= inaudible_free_time` (correct grace period)
`8e450d8` `host.default_gamedir`	Launcher / game dir	Not merged — no tracked need; avoid duplicate semantics
`e8ef7ad` `Host_Error` on bad precache model	Game API	Not merged — stricter than current `SV_ModelIndex` return 0; needs product sign-off
Quake / `common.h` / Waf-only / CI-only commits	N/A	Skipped
mainui submodule bumps	Vendor	Out of scope for this pass

SayText: team/all chat, spectator, name change; formats with localized %s1-style tokens if present on server.
GL: viewmodels and maps; mods that disable culling via TriAPI should not get faces forced back on.
Sound: move relative to short non-looping 3D sounds; confirm no premature cut when crossing the audibility threshold briefly.